It is that time again, time for another round of cool and useful gadgets, but this time, items that will come in handy during the summertime. There's the throwable panoramic camera ball, flask sandal for your booze, TowelMate with hidden storage compartments, a Bed Mate sheets cooler, and a solar neck strap that actually charges your camera. Click here to view the first image in today's viral picture gallery. Continue reading for a viral video showing how to make things invisible.